Enhanced precipitation hardening of Mg–Ca alloy by Al addition
We report the enhanced precipitation-hardening response of Mg–0.5 Ca (wt.%) alloy by
microalloying with Al. The peak hardness of 50 HV for the binary alloy was enhanced to 72
HV in a ternary Mg–0.5 Ca–0.3 Al alloy. Transmission electron microscopy and 3D atom
probe analyses confirmed that the improvement in the peak hardness is associated with the
dense precipitation of ordered monolayer Guinier–Preston zones and the subsequent
formation of Al2Ca causes the over-aging.
microalloying with Al. The peak hardness of 50 HV for the binary alloy was enhanced to 72
HV in a ternary Mg–0.5 Ca–0.3 Al alloy. Transmission electron microscopy and 3D atom
probe analyses confirmed that the improvement in the peak hardness is associated with the
dense precipitation of ordered monolayer Guinier–Preston zones and the subsequent
formation of Al2Ca causes the over-aging.
Enhanced precipitation hardening of Mg–Ca alloy by Al addition
J Jayamani, CL Mendis, T Ohkubo, K Oh-ishi… - Scripta …, 2010 - diva-portal.org
We report the enhanced precipitation-hardening response of Mg–0.5 Ca (wt.%) alloy by
microalloying with Al. The peak hardness of 50 HV for the binary alloy was enhanced to 72
HV in a ternary Mg–0.5 Ca–0.3 Al alloy. Transmission electron microscopy and 3D atom
probe analyses confirmed that the improvement in the peak hardness is associated with the
dense precipitation of ordered monolayer Guinier–Preston zones and the subsequent
formation of Al2Ca causes the over-aging.
microalloying with Al. The peak hardness of 50 HV for the binary alloy was enhanced to 72
HV in a ternary Mg–0.5 Ca–0.3 Al alloy. Transmission electron microscopy and 3D atom
probe analyses confirmed that the improvement in the peak hardness is associated with the
dense precipitation of ordered monolayer Guinier–Preston zones and the subsequent
formation of Al2Ca causes the over-aging.
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